Pulling head work station

ABSTRACT

A pulling head work station for attaching the lugs of pulling heads to cables, so that the cables may be pulled simultaneously through a conduit. The pulling head work station includes staggered cable receiving jigs, each jig having two clamps to hold a corresponding cable in place during attachment of a pulling lug. A chop saw to cut the cables and a crimper to secure a pulling lug to each stripped end portion of a cable may be slidably mounted to a work surface of the work station. A wire stripper may be removably attached to the work station.

CLAIM OF PRIORITY

This application claims priority to U.S. Provisional Patent Application No. 61/716,203, filed Oct. 19, 2012, the contents of which are hereby incorporated by reference.

FIELD OF THE INVENTION

The present technology relates to work stations for use in applying pulling heads to the ends of wires that have been wound onto a single reel for installation into a conduit.

DESCRIPTION OF RELATED ART

Pulling heads have been developed that allow multiple cables, sometimes referred to as wires or conductors, to be simultaneously pulled through a conduit. Such pulling heads include a plurality of lugs attached to lanyards of varying lengths, and the lanyards all attach to a single pulling head. A pulling rope running through the conduit is attached to a pulling head, which is in turn attached to each cable by separate pulling lugs, and the rope is pulled through the conduit, drawing the multiple conductor cabling from spools or other delivery mechanism and through the conduit.

BRIEF DESCRIPTION OF THE DRAWINGS

Specific examples have been chosen for purposes of illustration and description, and are shown in the accompanying drawings, forming a part of the specification. The drawings are not drawn to scale. Accordingly, the dimensions or proportions of particular elements, or the relationships between those different elements, as shown in the drawings are chosen only for convenience of description, but do not limit possible implementations of this disclosure. Like numerals represent like elements throughout the several figures.

FIG. 1 is a top plan view of an embodiment a pulling head work station of the present technology.

FIG. 2 is a side elevational view of a stripper that can be used with a pulling head work station of FIG. 1.

FIG. 3 is a perspective view of a crimping head that can be used with a pulling head work station of FIG. 1.

FIG. 4 is a perspective view of a plurality of cables placed into cable receiving jigs of the pulling head work station of FIG. 1.

FIG. 5 is an end elevational view of a cable receiving jig of the pulling head work station of FIG. 1.

FIG. 6 is a top plan view of a portion of a cable receiving jig of the pulling head work station of FIG. 1.

FIG. 7 is an end elevational view of cable receiving jigs of the pulling head work station of FIG. 1, in an open position and in a clamped position.

FIG. 8 is a top plan view of a single cable being fed to the pulling head work station of FIG. 1.

FIGS. 9A-9C are top plan views illustrating one of the cables of FIG. 8 being fed into a cable receiving jig of the pulling head work station of FIG. 1.

FIG. 10 is a top plan view of the pulling head work station of FIG. 1, with the chop saw in a first position.

FIG. 11 is a top plan view of the pulling head work station of FIG. 1, with the chop saw in a second position.

FIG. 12 is a top plan view of the pulling head work station of FIG. 1, with the chop saw in a third position.

FIG. 13 is a top plan view of the pulling head work station of FIG. 1, with the chop saw in a fourth position.

FIG. 14 is a top plan view of an embodiment of a chop saw that can be used with the pulling head work station of FIG. 1 illustrating alternative positions.

FIG. 15 is a top plan view of the chop saw of FIG. 14 illustrating movement between the alternative positions of FIG. 14.

FIG. 16 is a top plan view of the pulling head work station of FIG. 1, with the chop saw in a rest position.

FIG. 17 is a top plan view of the pulling head work station of FIG. 1, with the stripper of FIG. 2 in use.

FIGS. 18A-18C are side elevational views of a pulling lug that can be used with the present technology being placed onto the stripped end portion of a cable.

FIGS. 19A-19C are side elevational views of the stripper of FIG. 2 being used to strip an end portion of a cable.

FIG. 20 is a perspective view of the crimper of FIG. 3 being positioned with respect to a pulling lug on a cable.

FIG. 21 is a perspective view the crimper of FIG. 20 in place with respect to the pulling lug on a cable.

FIG. 22 is a perspective view of the crimper of FIGS. 20 and 21 crimping the pulling lug onto the cable.

FIG. 23 is a perspective view of the crimper of FIGS. 20-22 being removed from the cable.

FIG. 24 is a top plan view of the pulling head work station of FIG. 1 with the chop saw in a retracted position and the crimper in use.

FIG. 25 is a perspective view of a pulling lug crimped onto a cable after use of the present technology.

FIG. 26 is a perspective view of a reel with cables having pulling lugs attached thereto after use of after use of the present technology.

DETAILED DESCRIPTION

FIG. 1 illustrates an embodiment of a pulling head work station 100 of the present invention. The pulling head work station 100 includes a base 102 having a work surface 104. The work surface 104 is preferably horizontal and level. The additional components of the pulling head work station 100 are mounted on the base 102 of the pulling head work station 100. The pulling head work station 100 can include a plurality of cable receiving jigs 106 a-106 d mounted to the work surface 104 of the base 102. Each cable receiving jig can have a first end 108 and a second end 110. A first cable clamp 112 a-112 d can be mounted at the first end 108 of each cable receiving jig 106 a-106 d, and a second cable clamp 114 a-114 d can be mounted at the second end 110 of each cable receiving jig 106 a-106 d.

As illustrated in FIG. 1, the length of cable receiving jig 106 a is less than the length of cable receiving jig 106 b. The length of cable receiving jig 106 b is less than the length of cable receiving jig 106 c. The length of cable receiving jig 106 c is less than cable receiving jig 106 d. As a result, while jig first ends 108 are in horizontal alignment, the jig second ends 110 are staggered (i.e. not in horizontal alignment with one another). As explained below, this permits the cables to be automatically and conveniently cut in a staggered fashion after they are clamped in the jigs 106 a-106 d.

It should be noted that while four jigs are illustrated in the figures and described below, the work station could feature an alternative number of jigs and associated components.

In methods of the present technology, a reel 200 including at least one cable 202 a can be provided, and the pulling head work station 100 can be used to attach a pulling lug 300 a-300 c to each cable 202 a-202 d. To that end, the pulling head work station 100 can include a number of tools that can be used to cut cables 202 a-202 d, strip the end portions 204 of the cables 202 a-202 d, and secure pulling lugs 300 a-300 c to the stripped end portions 204 of the cables 202 a-202 d. For example, the pulling head work station 100 can include a chop saw 116 slidably mounted to the base 102 via track 103, a stripper 118 removably mounted to the base 102, and a crimping head 120 slidably mounted to the base, also by track 103. The track 103 is mounted to the work surface 104 of the base 102.

The pulling head work station 100 can also include a power supply system 500 that supplies power to at least one of the chop saw 116 (via line 504), the stripper 118 and/or the crimping head 120 (via line 502). In one example, the power supply system 500 can include a self contained power source, such as a battery, that provides power to the work station tools. In another example, power supply system 500 can include a power cord that can connect to an electrical outlet to transfer power to the power supply system 500. In a third example, a power supply system 500 could include both a self-contained power source and at least one power cord, to ensure that power can be provided to the power supply system 500 under various circumstances.

FIG. 2 illustrates one example of a stripper 118 that can be used with a pulling head work station 100. The stripper 118 can be a portable device, and can be removably mounted to the base 102 of the pulling head work station 100. The stripper can be a cordless device, which can be electrically connected to the power supply system 500 to be recharged when it is mounted to the base 102 of the pulling head work station 100. Alternatively, the stripper 118 can include a power cord that is connected to the power supply system 500.

FIG. 3 illustrates one example of a crimping head 120 that can be used with a pulling head work station 100. The crimping head 120 can be slidably mounted to the base 102 of the work station 100 via track 103 and a carriage. As will be explained in greater detail below, in the illustrated embodiment, the crimping head 120 is slidable in two directions with respect to the work surface 104, such as lengthwise and across within the plane defined by the X and Y arrows of FIG. 1. The crimping head 120 is also illustrated as being mounted to the base 102 of the work station in parallel with the chop saw 116.

FIGS. 4-7 illustrate a plurality of cables 202 a-202 d placed into cable receiving jigs 106 a-106 d of the pulling head work station 100 and clamped with first clamps 112 a-112 d (FIG. 1) and second clamps 114 a-114 d. As illustrated, the cable receiving jigs 106 a-106 d can be mounted parallel to each other with the ends 110 featuring a staggered configuration due to the differing lengths of jigs 106 a-106 d. Additionally, as shown in FIGS. 5 and 7, each cable receiving jig 106 can have a V-shaped cross section.

FIG. 7 illustrates second clamps 114 a and 114 b in a clamped position and in an open position, respectively. Each of the first clamps 112 a-112 d and second clamps 114 a-114 d has an open position and a clamped position, and can function in the same manner illustrated in FIG. 7.

A method of using a pulling head work station 100 of the present technology can include placing a portion of each cable 202 a-202 d onto a corresponding cable receiving jig 106 a-106 d mounted to the work surface 104 of to pulling head work station 100. As discussed above, each cable receiving jig 106 a-106 d can have a first end 108 and a second end 110. The method can also include clamping the placed portion of each cable 202 with a first cable clamp 112 mounted at the first end 108 of each cable receiving jig 106 and a second cable clamp 114 mounted at the second end 114 of each cable receiving jig 106.

After the cables 202 a-202 d are clamped into their corresponding jigs 106 a-106 d, the method can include cutting each cable 202 a-202 d to a desired length using a chop saw 116 slidably mounted to the pulling head work station 100 to produce a cut cable.

The method can then include removing at least one cable layer, such as the cable jacket and/or insulation, from an end portion 204 of each cut cable with a stripper 118 removably mounted to the pulling head work station 100.

Once the end portion 204 of the cable is stripped, a pulling lug 300 can be placed onto each stripped end portion 204. The method can then include crimping a pulling lug 300 onto each end portion 204 using a crimping head 120 slidably mounted to the base 102. Once the pulling lugs have been secured to the cables 202 by crimping, the method can include unclamping each cable 202 from each cable receiving jig 106.

FIGS. 8 and 9 illustrate placing a portion of each cable from roll 200 into a cable receiving jig 106 a-106 d, and clamping the placed portion of each cable with a first cable clamp 112 mounted at the first end 108 of each cable receiving jig 106 a-106 d and a second cable clamp 114 mounted at the second end 110 of each cable receiving jig. Specifically, as shown in FIGS. 9A-9C, a cable 202 a can be fed into a cable receiving jig 106 a of a pulling head work station 100, in the direction of the arrows 203 and 205 of FIG. 9B as illustrated, and then clamped by clamping each of the first clamp 112 a and second clamp 114 a.

FIGS. 10-16 illustrate one example of use of the chop saw 116 to cut, in serial, each cable 202 a-202 d to a desired length. As illustrated in FIG. 10, the chop saw 116 can be positioned with respect to a first cable 202 a via a track 103 and a carriage 105 to cut the cable. The carriage 105 of FIG. 10 slides along the track 103 in the direction of arrows 207. Furthermore, the chop saw 116 is mounted at one end of slide bar 107. Slide bar 107 slides with respect to the carriage 105 in the directions indicated by arrows 209 of FIG. 10.

As a result, as illustrated in FIGS. 11-15, the chop saw 116 can be repositioned with respect to a second cable 202 b, a third cable 202 c, and a fourth cable 202 d by sliding it incrementally in a lengthwise and a crosswise direction with respect to the work surface 104 of the pulling head work station 100 via track 103, carriage 105 and slide bar 107. As noted previously, the cables are automatically and conveniently cut to the desired lengths in a staggered fashion due to the staggered configuration of the ends 110 of the jigs 106 a-106 d.

As illustrated in FIG. 16, once each cable 202 a-202 d has been cut to a desired length, the chop saw 116 can be returned to a rest position.

FIGS. 17-19 illustrate removing at least one cable layer from cable 202 d, such as the cable jacket and/or insulation, from an end portion 204 d of cut cable 202 d with a stripper 118, and placing a pulling lug 300 d onto the stripped end 204 d of cable 202 d. A similar procedure is followed for cables 202 a-202 c (of FIG. 17).

FIGS. 20-25 illustrate crimping a pulling lug 300 d onto the end portion of cut and stripped cable 202 d using the crimping head 120. As illustrated in FIG. 24, the crimping head 120 can be positioned with respect to cable 202 d via a track 103 and a carriage 111 to cut the cable. The carriage 111 of FIG. 24 slides along the track 103 in the direction of arrows 215. Furthermore, the crimping head 120 is mounted at one end of slide bar 113. The slide bar 113 slides with respect to the carriage 111 in the directions indicated by arrows 217 of FIG. 24.

As a result, as shown in FIGS. 20-21, the crimping head 120 can be slidably positioned, in the direction of arrow 211 in FIG. 20, over a pulling lug 300 d that has been placed over the stripped end portion of cable 202 d. As shown in FIG. 22, the crimping head then is activated to crimp the pulling lug 300 d onto the stripped end portion of cable 202 d, preferably in two locations, such as first crimping location 304 and second crimping location 305 illustrated in FIG. 25. As shown in FIG. 23, the crimping head can be slidably removed in the direction of the arrow 219 after the crimping process. A similar procedure is followed for cables 202 a-202 c and pulling lugs 300 a-300 c (of FIGS. 24 and 26).

FIG. 26 illustrates a reel 200 having a plurality of cables 202 a-202 d after the pulling lugs 300 a-300 d have been attached in accordance with the above.

While the preferred embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that changes and modifications may be made therein without departing from the spirit of the invention, the scope of which is defined by the appended claims. 

What is claimed is:
 1. A pulling head work station comprising: a base having a work surface; a plurality of cable receiving jigs mounted to the work surface of the base, each cable receiving jig having a first end portion and a second end portion; a first cable clamp mounted at the first end portion of each cable receiving jig; a second cable clamp mounted at the second end portion of each cable receiving jig; and said second ends of the plurality of cable receiving jigs having a staggered configuration.
 2. The pulling head work station of claim 1 wherein each of the plurality of cable receiving jigs has a differing length as compared to the remaining plurality of cable receiving jigs.
 3. The pulling head work station of claim 2 wherein the first ends of the plurality of cable receiving jigs are aligned.
 4. The pulling head work station of claim 1 further comprising a chop saw movably mounted to the base.
 5. The pulling head work station of claim 4 further comprising: a track mounted on the work surface of the base; a slide bar upon which the chop saw is mounted; a carriage upon which the slide bar is slidably mounted, said carriage slidably mounted on the track.
 6. The pulling head work station of claim 1 further comprising a wire stripper removably mounted to the base.
 7. The pulling head work station of claim 1 further comprising a crimping head movably mounted to the base.
 8. The pulling head work station of claim 7 further comprising: a track mounted on the work surface of the base; a slide bar upon which the crimping head is mounted; a carriage upon which the slide bar is slidably mounted, said carriage slidably mounted on the track.
 9. The pulling head work station of claim 1 wherein each of the plurality of cable receiving jigs has a V-shaped cross section.
 10. The pulling head work station of claim 1 wherein the plurality of cable receiving jigs are positioned generally parallel to one another.
 11. The pulling head work station of claim 1, wherein the chop saw is slidable in two directions with respect to the work surface of the base.
 12. The pulling head work station of claim 1, wherein the crimping head is slidable in two directions with respect to the work surface of the base.
 13. The pulling head work station of claim 1, wherein the work surface of the base is horizontal.
 14. The pulling head work station of claim 1, wherein each cable receiving jig has a V-shaped cross section.
 15. The pulling head work station of claim 1, wherein the cable receiving jigs are mounted parallel to each other. 